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-rw-r--r--exec.c84
1 files changed, 26 insertions, 58 deletions
diff --git a/exec.c b/exec.c
index 4fc96cb917..82bfffcb8b 100644
--- a/exec.c
+++ b/exec.c
@@ -2809,7 +2809,7 @@ static ram_addr_t last_ram_offset(void)
}
ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name,
- ram_addr_t size, void *host)
+ ram_addr_t size, void *host)
{
RAMBlock *new_block, *block;
@@ -2833,74 +2833,37 @@ ram_addr_t qemu_ram_alloc_from_ptr(DeviceState *dev, const char *name,
}
}
- new_block->host = host;
-
- new_block->offset = find_ram_offset(size);
- new_block->length = size;
-
- QLIST_INSERT_HEAD(&ram_list.blocks, new_block, next);
-
- ram_list.phys_dirty = qemu_realloc(ram_list.phys_dirty,
- last_ram_offset() >> TARGET_PAGE_BITS);
- memset(ram_list.phys_dirty + (new_block->offset >> TARGET_PAGE_BITS),
- 0xff, size >> TARGET_PAGE_BITS);
-
- if (kvm_enabled())
- kvm_setup_guest_memory(new_block->host, size);
-
- return new_block->offset;
-}
-
-ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size)
-{
- RAMBlock *new_block, *block;
-
- size = TARGET_PAGE_ALIGN(size);
- new_block = qemu_mallocz(sizeof(*new_block));
-
- if (dev && dev->parent_bus && dev->parent_bus->info->get_dev_path) {
- char *id = dev->parent_bus->info->get_dev_path(dev);
- if (id) {
- snprintf(new_block->idstr, sizeof(new_block->idstr), "%s/", id);
- qemu_free(id);
- }
- }
- pstrcat(new_block->idstr, sizeof(new_block->idstr), name);
-
- QLIST_FOREACH(block, &ram_list.blocks, next) {
- if (!strcmp(block->idstr, new_block->idstr)) {
- fprintf(stderr, "RAMBlock \"%s\" already registered, abort!\n",
- new_block->idstr);
- abort();
- }
- }
-
- if (mem_path) {
+ if (host) {
+ new_block->host = host;
+ } else {
+ if (mem_path) {
#if defined (__linux__) && !defined(TARGET_S390X)
- new_block->host = file_ram_alloc(new_block, size, mem_path);
- if (!new_block->host) {
- new_block->host = qemu_vmalloc(size);
+ new_block->host = file_ram_alloc(new_block, size, mem_path);
+ if (!new_block->host) {
+ new_block->host = qemu_vmalloc(size);
#ifdef MADV_MERGEABLE
- madvise(new_block->host, size, MADV_MERGEABLE);
+ madvise(new_block->host, size, MADV_MERGEABLE);
#endif
- }
+ }
#else
- fprintf(stderr, "-mem-path option unsupported\n");
- exit(1);
+ fprintf(stderr, "-mem-path option unsupported\n");
+ exit(1);
#endif
- } else {
+ } else {
#if defined(TARGET_S390X) && defined(CONFIG_KVM)
- /* XXX S390 KVM requires the topmost vma of the RAM to be < 256GB */
- new_block->host = mmap((void*)0x1000000, size,
- PROT_EXEC|PROT_READ|PROT_WRITE,
- MAP_SHARED | MAP_ANONYMOUS, -1, 0);
+ /* XXX S390 KVM requires the topmost vma of the RAM to be < 256GB */
+ new_block->host = mmap((void*)0x1000000, size,
+ PROT_EXEC|PROT_READ|PROT_WRITE,
+ MAP_SHARED | MAP_ANONYMOUS, -1, 0);
#else
- new_block->host = qemu_vmalloc(size);
+ new_block->host = qemu_vmalloc(size);
#endif
#ifdef MADV_MERGEABLE
- madvise(new_block->host, size, MADV_MERGEABLE);
+ madvise(new_block->host, size, MADV_MERGEABLE);
#endif
+ }
}
+
new_block->offset = find_ram_offset(size);
new_block->length = size;
@@ -2917,6 +2880,11 @@ ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size)
return new_block->offset;
}
+ram_addr_t qemu_ram_alloc(DeviceState *dev, const char *name, ram_addr_t size)
+{
+ return qemu_ram_alloc_from_ptr(dev, name, size, NULL);
+}
+
void qemu_ram_free(ram_addr_t addr)
{
RAMBlock *block;